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It has been reported that 54% of federal government employees use the US Postal service. If a sample of 400 federal government employees are selected, find the mean, variance, and standard deviation of the number who use the US Postal Service.
Statistics and Probability, Statistics
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How do you calculate true population proportion if your defective sample is too small? For example, if you have 50 and defect is 4. Please look below for more details
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